During the trial, Ms Kouider, 35, and Mr Medouni, 40, were accused of torturing Ms Lionnet in the lead-up to her death.

Mr Horwell said they regarded “submissive” Miss Lionnet as “expendable” and killed her out of “revenge and punishment”.

Mr Walton, a founder member of Boyzone, was praised by Mr Horwell for his “integrity and honesty” in giving evidence to the court.

He added: “Walton is a wealthy man – and good luck to him for that – but it is of course a truth universally acknowledged that a single man in possession of a good fortune will often be parted from it.”